CN111255441A - Projection measurement type safe feeding device of underground measuring instrument - Google Patents

Abstract

The invention discloses a throwing measuring type safe feeding device of an underground measuring instrument, which relates to the technical field of geological drilling and well drilling engineering.A fishing head is provided with a steel cable mounting hole and is connected with the upper end of a communicating bin through a plurality of telescopic righting brackets, the lower end of the communicating bin, an upper connector of the instrument bin and the instrument bin, the instrument storehouse lower clutch, the upper end that a plurality of turbine speed reduction festival and turbine festival connect is connected gradually, the lower extreme that the turbine festival connects is connected with the upper end of damping section of thick bamboo top connection through the flexible support of rightting of a plurality of, hydraulic damping section of thick bamboo is installed to the lower extreme of damping section of thick bamboo top connection, hydraulic damping section of thick bamboo surface is provided with the through-hole, the upper end of bottom expanding piston extends inside the hydraulic damping section of thick bamboo, collision base is installed to the lower extreme of bottom expanding piston, the cover is equipped with buffer spring on the bottom expanding piston, buffer spring is located under the hydraulic damping section of thick bamboo between terminal surface and the. The device has greatly promoted security, flexibility and accuracy, and is more high-efficient and reliable, and the suitability is strong.

Description

Projection measurement type safe feeding device of underground measuring instrument

Technical Field

The invention relates to the technical field of geological drilling and well drilling engineering, in particular to a projection-measurement type safe feeding device of an underground measuring instrument.

Background

The measurement technology of hole bottom parameters is known as the 'eye' of drilling engineering, and is an extremely important link in drilling and well drilling links. In the drilling process, bottom drilling tools such as a drill bit, an underground power drilling tool, a guide drilling tool and the like drill in the deep part of a stratum far away from the ground surface, complexity and concealment are achieved, and measurement parameters of the bottom of a hole are used as decision bases for control of a drilling track, judgment of underground working conditions, formulation of a drilling process, formulation of a drilling fluid scheme and the like. Therefore, the bottom of hole parameters must be efficiently obtained.

The existing measurement technology for the drilling parameters at the bottom of the hole mainly comprises the modes of measurement while drilling, bottom short section measurement, throw-in type measurement and the like. The measurement while drilling technology depends on mud pulse transmission data, can obtain the drilling parameters of the hole bottom in real time, is the most advanced hole bottom data obtaining technology in the current drilling industry, but has the defects of complex instrument structure, high manufacturing and maintenance cost, low data transmission efficiency and small obtained data quantity. The measurement of the short section at the bottom is mainly implemented in a bottom drilling tool, the short section is internally provided with a measurement module and a storage module, a large amount of hole bottom data in the drilling process can be stored in advance, but the data acquisition must be played back after the drilling is carried out, and effective data cannot be acquired in the repeated drilling process. Different from two modes of measurement while drilling and bottom short section measurement, the input type measurement technology does not need to install a test instrument at the position near a drill bit in advance, can input a test tool into a drill rod at any time according to the actual condition of the drilling process to obtain the parameters of the bottom of a hole, is flexible to use, has obvious advantage for quickly obtaining the key parameters in the drilling process, can avoid the instrument from working at the bottom of the hole for a long time through the input type measurement, allows the instrument to work at higher temperature within a few hours through the modes of a built-in heat-preservation Dewar flask and the like, and provides a method for quickly obtaining the parameters of the bottom of the hole under the high-temperature condition.

However, the drop-in measurement also has some problems, resulting in limited applications. Firstly, with the development of the industry, the measurement precision of hole bottom parameters is higher and higher, however, the damping buffer mechanism of the existing projection measuring instrument mainly depends on a bottom spring, the safety of a sensor or a probe tube in the measuring instrument cannot be ensured only by a primary buffer mode of the spring, and a speed reducing mechanism is not provided, the descending speed of the instrument before touching the bottom is higher, and the impact force of bottom-touching collision easily causes the damage of the measuring instrument and the probe tube, and cannot meet the requirements of the measurement precision and the safety; secondly, after the existing throwing-testing type instrument is put into a drill rod, the instrument can be taken out after the drill rod is lifted, data can not be acquired under the condition that the drill rod is not lifted, and the working efficiency and the flexibility also greatly improve the space; thirdly, most of the existing projection measuring instruments are single parameter measurement, different projection measuring tools are used for measuring different parameters, so that multiple sets of projection measuring tools are required for measuring multiple parameters, and the interchange of the different parameter measuring instruments on the projection tools cannot be realized; fourthly, in order to ensure that the existing measuring instrument can smoothly reach the well bottom, the used centralizer has a large gap with the inner wall of the drill rod, the instrument cannot be positioned at the center of the drill rod after reaching the well bottom, and the measuring precision requirement of partial parameters cannot be met.

Disclosure of Invention

In order to solve the technical problems, the invention provides the projection-measurement type safe feeding device of the underground measuring instrument, which greatly improves the safety, flexibility and accuracy, and is more efficient, reliable and high in applicability.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a throwing measurement type safe feeding device of an underground measuring instrument, which comprises a fishing head, a communication bin, an instrument bin, an upper instrument bin joint, a lower instrument bin joint, a hydraulic damping cylinder, an upper damping cylinder joint, a bottom telescopic piston, a collision base, a buffer spring, a turbine section joint, a plurality of turbine speed reducing sections and a plurality of telescopic righting supports, wherein a steel cable mounting hole is formed in the fishing head, the fishing head is connected with the upper end of the communication bin through the plurality of telescopic righting supports, the lower end of the communication bin, the upper instrument bin joint, the instrument bin, the lower instrument bin joint, the plurality of turbine speed reducing sections and the upper end of the turbine section joint are sequentially connected, the lower end of the turbine section joint is connected with the upper end of the upper damping cylinder joint through the plurality of telescopic righting supports, the hydraulic damping cylinder is installed at the lower end of the upper damping cylinder joint of the damping cylinder, the hydraulic damping section of thick bamboo surface is provided with a plurality of through-holes, the upper end of bottom telescopic piston extends inside the hydraulic damping section of thick bamboo, the lower extreme of bottom telescopic piston is installed the collision base, the cover is equipped with on the bottom telescopic piston buffer spring, buffer spring is located under the hydraulic damping section of thick bamboo the terminal surface with between the collision base up end.

Preferably, the telescopic centering support comprises a centering center shaft, a spring, two sliding rings and a plurality of telescopic assemblies, the spring and the two sliding rings are all sleeved on the centering center shaft, the spring is located above the sliding rings on the upper portion, the spring is in a pre-compression state, the telescopic assemblies comprise a pin shaft, a centering wheel, two upper supporting rods and two lower supporting rods, the upper ends of the two upper supporting rods are hinged to the sliding rings on the upper portion, the lower ends of the two lower supporting rods are hinged to the sliding rings on the lower portion, the pin shaft is connected with the lower ends of the two upper supporting rods and the upper ends of the two lower supporting rods, and the centering wheel is sleeved on the pin shaft.

Preferably, the two ends of the central shaft of the telescopic righting support, which is arranged between the fishing head and the communication bin, are respectively in threaded connection with the lower end of the fishing head and the upper end of the communication bin, the two ends of the central shaft of the telescopic righting support, which is arranged between the turbine joint and the upper joint of the damping cylinder, are respectively in threaded connection with the lower end of the turbine joint and the upper end of the upper joint of the damping cylinder, and the lower end of the upper joint of the damping cylinder is in threaded connection with the hydraulic damping cylinder.

Preferably, the telescopic righting support further comprises an anti-collision wing rib, a step surface is arranged on the upper joint of the damping cylinder, the anti-collision wing rib is sleeved outside the upper joint of the damping cylinder, and the anti-collision wing rib is located between the sliding ring on the middle lower portion of the telescopic righting support and the step surface of the upper joint of the damping cylinder.

Preferably, the turbine speed reduction section comprises a turbine central shaft, a turbine and two bearings, wherein two ends of the turbine central shaft are respectively and fixedly connected with inner rings of the two bearings, the turbine central shaft is sleeved with the turbine clearance, and two ends of the turbine are respectively and fixedly connected with outer rings of the two bearings.

Preferably, the turbine speed reduction section is provided with a plurality of turbine speed reduction sections, the turbine center shaft of the turbine speed reduction section at the top is in threaded connection with the lower connector of the instrument bin through a stud, the turbine center shaft of the turbine speed reduction section at the bottom is in threaded connection with the turbine connector, two adjacent turbine center shafts are in threaded connection, and two adjacent turbine speed reduction sections are provided with bearing backing rings between the bearings.

Preferably, the communicating bin is in threaded connection with the upper connector of the instrument bin, the upper connector of the instrument bin is in threaded connection with the instrument bin, the lower connector of the instrument bin is in threaded connection with the instrument bin, and O-shaped rings are arranged at the connection positions of the two ends of the instrument bin, the upper connector of the instrument bin and the lower connector of the instrument bin.

Preferably, still including surveying the window stifled silk, be provided with O type circle on the stifled silk of surveying the window, be provided with the detection window in the middle of the instrument storehouse top connection, survey the window stifled silk and be used for sealing the detection window, be provided with the transverse hole on the intercommunication storehouse.

Compared with the prior art, the invention has the following technical effects:

the invention provides a projection-measurement type safe feeding device of an underground measuring instrument, which adopts a two-stage buffering function of matching a buffering spring and a hydraulic damping buffer and a two-stage speed reducing function of matching a turbine speed reducing joint and a telescopic righting support, and can ensure that an underground parameter acquisition instrument is safely fed to the bottom of a well by a projection-measurement method. The telescopic righting support can ensure that the device is positioned at the central position of the input pipe body, improves the measuring accuracy and can be applied to a drill column with the inner diameter changed. Can match salvage devices such as winch, steel cable and salvage through setting up fishing head, and then realize not carrying the brill and acquire the downhole measurement parameter, fishing head is equipped with the steel cable mounting hole, but lug connection hoist and mount steel cable uses the winch to transfer the instrument, adopts storage formula measurement mode, can partly replace logging instrument operation. The device greatly improves the safety of the projection-measuring type operation instrument, has the characteristics of flexibility, high efficiency and reliability, has strong applicability, is suitable for oil-gas drilling and geological drilling, and has great advantages and application potential in deep well bottom parameter measurement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a drop-test type safety feeding device of a downhole measuring instrument according to the present invention;

FIG. 2 is a cross-sectional view of a drop-in gauge safety feeder of a downhole measurement instrument provided in accordance with the present invention;

FIG. 3 is a schematic perspective view of the telescopic righting bracket of the present invention;

FIG. 4 is a front view of the telescopic righting support of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 1;

fig. 6 is a schematic view of the structure of the communicating chamber and the instrument chamber of the present invention.

Description of reference numerals: 1-a crash base; 2-bottom telescopic piston; 3-a hydraulic damping cylinder; 4-a telescopic righting bracket; 41-centering the central shaft; 42-a spring; 43-a slip ring; 44-upper support bar; 45-lower support bar; 46-a pin shaft; 47-a righting wheel; 5-turbine central axis; 6-a turbine; 7-a bearing; 8-instrument bin lower joint; 9-an instrument bin; 10-detecting window plugging; 11-fishing head; 12-a communicating bin; 13-instrument bin upper joint; 14-a stud; 15-bearing backing ring; 16-a turbine section joint; 17-crash ribs; 18-damping cylinder upper joint; 19-buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a projection-measurement type safe feeding device of an underground measuring instrument, which greatly improves the safety, flexibility and accuracy, is more efficient and reliable and has strong applicability.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1-2, the present embodiment provides a drop-test type safe feeding device for a downhole measuring instrument, which includes a fishing head 11, a communication bin 12, an instrument bin 9, an instrument bin upper joint 13, an instrument bin lower joint 8, a hydraulic damping cylinder 3, a damping cylinder upper joint 18, a bottom telescopic piston 2, a collision base 1, a buffer spring 19, a turbine joint 16, a plurality of turbine deceleration joints and a plurality of telescopic centering brackets 4, wherein the fishing head 11 is provided with a cable installation hole, the fishing head 11 in the present embodiment can be salvaged by using a fishing device similar to a cable core drilling, so that the drop-test instrument can be salvaged without lifting the drilling, and downhole data can be obtained, thereby greatly improving flexibility and economy of the drop-test type, by providing the cable installation hole, the drop-test carrier can be used as a cable crane measuring carrier under a specific working condition, and a measuring probe can be sent into a well to obtain parameters, the applicability of the device is further improved. The fishing head 11 is connected with the upper end of the communicating bin 12 through a plurality of telescopic righting supports 4, the lower end of the communicating bin 12, an instrument bin upper joint 13, an instrument bin 9, an instrument bin lower joint 8, a plurality of turbine speed reducing joints and the upper end of a turbine joint 16 are sequentially connected, the lower end of the turbine joint 16 is connected with the upper end of a damping cylinder upper joint 18 through a plurality of telescopic righting supports 4, and the hydraulic damping cylinder 3 is installed at the lower end of the damping cylinder upper joint 18.

The surface of the hydraulic damping cylinder 3 is provided with a plurality of through holes, specifically, the through holes are uniformly distributed along the axial direction of the hydraulic damping cylinder 3 and are used for communicating the outside of the instrument with the inside of the hydraulic damping cylinder 3; the upper end of a bottom telescopic piston 2 extends into a hydraulic damping cylinder 3, the lower end of the bottom telescopic piston 2 is provided with a collision base 1, specifically, the collision base 1 is similar to a cone, and the collision base 1 is connected with the bottom telescopic piston 2 through threads; the bottom telescopic piston 2 is sleeved with a buffer spring 19, the buffer spring 19 is positioned between the lower end face of the hydraulic damping cylinder 3 and the upper end face of the collision base 1, and the buffer spring 19 is in a pre-compression state. The collision base 1, the bottom telescopic piston 2, the buffer spring 19 and the hydraulic damping cylinder 3 jointly form a secondary buffer mechanism of the device. When the device moves to the bottom of a drill column, the collision base 1 collides with a limiting mechanism in the drill column, the pre-compressed buffer spring 19 is compressed to form primary buffer, the bottom telescopic piston 2 and the hydraulic damping cylinder 3 are driven to generate relative displacement, the drilling fluid in the hydraulic damping cylinder 3 is discharged to the outside of the instrument through a plurality of through holes by the bottom telescopic piston 2 to form hydraulic damping, namely secondary buffer, and the two-stage buffer is matched together to ensure the safety of a measuring carbon tube and related electronic components in the throwing and measuring device.

As shown in fig. 3-4, the telescopic centering bracket 4 includes a centering center shaft 41, a spring 42, two sliding rings 43 and a plurality of telescopic assemblies, wherein two ends of the centering center shaft 41 are threaded and can be connected with other connectors, the spring 42 and the two sliding rings 43 are both sleeved on the centering center shaft 41, the spring 42 is located above the upper sliding ring 43, the spring 42 is in a pre-compression state, the telescopic assemblies include a pin shaft 46, a centering wheel 47, two upper support rods 44 and two lower support rods 45, upper ends of the two upper support rods 44 are hinged to the upper sliding ring 43, lower ends of the two lower support rods 45 are hinged to the lower sliding ring 43, the pin shaft 46 connects lower ends of the two upper support rods 44 and upper ends of the two lower support rods 45, the centering wheel 47 is sleeved on the pin shaft 46, and the centering wheel 47 can rotate relative to the pin shaft 46. In this embodiment, the plurality of telescopic assemblies are uniformly distributed along the circumferential direction, and the number of the telescopic assemblies is six. The upper slip ring 43 is pressed downwards by the pre-compressed spring 42, so that the upper support rod 44 and the lower support rod 45 are always kept in an outward supporting state, and the circumferentially uniformly distributed centralizing wheels 47 are pressed on the inner wall of the drill rod to play a centralizing role. When the device moves downwards and meets the diameter change of the inner wall of the drill string, the telescopic righting bracket 4 can deform under the action of the spring 42, and the circumferentially and uniformly distributed righting wheels 47 are ensured to keep in contact with the inner wall of the drill rod, so that the telescopic righting effect is realized. Meanwhile, the centralizing wheel 47 of the telescopic centralizing bracket 4 generates friction with the inner wall of the drill rod, and can play a certain deceleration role in the downward movement process of the device. In particular, the righting wheels 47 may be made of metal, rubber, or other material as needed to match the appropriate coefficient of friction.

In the embodiment, the upper part and the lower part of the device are respectively provided with the telescopic righting support 4 to play a role in righting the whole device, if an instrument bin 9 in the device is longer, namely the number of built-in sensors, storage systems and power supply batteries is more, the number of the telescopic righting supports 4 can be increased according to requirements, and the device is ensured to be positioned in the center of the interior of a drill string. When two or more telescopic centering brackets 4 are arranged on the upper part or the lower part of the device, a connecting joint needs to be arranged between two adjacent centering central shafts 41, and the two centering central shafts 41 are in threaded connection with the connecting joint.

In this embodiment, two ends of the central shaft of the telescopic righting support 4 disposed between the fishing head 11 and the communicating bin 12 are respectively in threaded connection with the lower end of the fishing head 11 and the upper end of the communicating bin 12, two ends of the central shaft of the telescopic righting support 4 disposed between the turbine knuckle joint 16 and the damping cylinder upper joint 18 are respectively in threaded connection with the lower end of the turbine knuckle joint 16 and the upper end of the damping cylinder upper joint 18, and the lower end of the damping cylinder upper joint 18 is in threaded connection with the hydraulic damping cylinder 3.

In order to prevent the inner wall of the drill string from directly impacting the telescopic righting support 4 due to diameter change, an anti-collision wing rib 17 is further arranged in the embodiment, a step surface is arranged on the upper joint 18 of the damping cylinder, the anti-collision wing rib 17 is sleeved outside the upper joint 18 of the damping cylinder, and the anti-collision wing rib 17 is located between the sliding ring 43 at the middle lower part of the telescopic righting support 4 and the step surface of the upper joint 18 of the damping cylinder. Specifically, crashproof rib 17 includes sleeve and a plurality of side rib board, and is a plurality of the side rib board is fixed in on the sleeve outer wall and along circumference evenly distributed, and the damping section of thick bamboo top connection 18 outside is located to the sleeve cover, and the slip ring 43 of the support 4 is right in a flexible way and the step face of damping section of thick bamboo top connection 18 is fixed the sleeve.

The friction deceleration of the telescopic righting bracket 4 is the first-stage deceleration of the device, and in addition, a turbine deceleration joint is arranged in the embodiment to effectively control the downward movement speed of the device, namely, the second-stage deceleration of the device. As shown in fig. 5, the turbine speed reducer section includes a turbine central shaft 5, a turbine 6 and two bearings 7, two ends of the turbine central shaft 5 are respectively fixedly connected with inner rings of the two bearings 7, the turbine 6 is sleeved on the turbine central shaft 5 in a clearance manner, and two ends of the turbine 6 are respectively fixedly connected with outer rings of the two bearings 7. One or more turbine speed reducing joints can be installed according to requirements, the total weight of the device is increased, the more the number of the installed turbine speed reducing joints is, the better the speed reducing effect of the downward movement of the device is. The turbine 6 is connected with the turbine center shaft 5 through the bearing 7, makes the turbine 6 take place to rotate when taking place relative motion with the drilling fluid, produces ascending lift, reduces the acceleration of device downstream, plays the deceleration effect, and through the configuration of a plurality of turbine deceleration festival, makes the device after the certain distance of downstream, at the uniform velocity decline state under keep reasonable speed position, avoids the device descent speed too fast to lead to the collision damage. The force of partial rotation caused by the rotation of the turbine 6 is transmitted to the bearing 7 and then transmitted to the device body, and the partial rotation force can be counteracted by the friction force between the telescopic righting bracket 4 and the inner wall of the drill rod, so that the device body does not rotate.

Specifically, the number of the turbine speed reducing joints is multiple, the turbine central shaft 5 of the top turbine speed reducing joint is in threaded connection with the instrument bin lower joint 8 through a stud 14, the turbine central shaft 5 of the bottom turbine speed reducing joint is in threaded connection with a turbine joint 16, two adjacent turbine central shafts 5 are in threaded connection, and a bearing backing ring 15 is arranged between two adjacent bearings 7 of the two turbine speed reducing joints. In this embodiment, two turbine speed reduction nodes are provided.

The communicating bin 12 is in threaded connection with the instrument bin upper connector 13, the instrument bin upper connector 13 is in threaded connection with the instrument bin 9, the instrument bin lower connector 8 is in threaded connection with the instrument bin 9, and O-shaped rings are arranged at the connection positions of the two ends of the instrument bin 9, the instrument bin upper connector 13 and the instrument bin lower connector 8. The O-shaped ring can ensure that the instrument bin 9 is isolated from external drilling fluid, sealing is realized, and the working environment of electronic systems such as a measuring instrument, a probe tube, a battery and a storage circuit in the instrument bin 9 is provided.

As shown in fig. 6, in order to improve the feeding device and meet the requirement that a plurality of measurement probe tubes are fed into the well, the feeding device further comprises a detection window plugging wire 10 in the embodiment, an O-ring is arranged on the detection window plugging wire 10, a detection window is arranged in the middle of an upper connector 13 of the instrument bin, and the detection window plugging wire 10 is used for sealing the detection window. Through setting up the needs of surveying probe and outside contact such as the detection window in order to satisfy temperature, pressure, when not needing the detection window, measure such as well deviation, position, rotational speed, vibration, use the stifled silk 10 cooperation O type circle of detection window to guarantee to seal. In order to ensure the service environment of the detection window, the upper connector 13 of the instrument bin is fixedly provided with a communicating bin 12 through threads, and the communicating bin 12 is provided with a transverse hole so as to be communicated with external drilling fluid and provide an in-hole environment state. The outer cylinder of the instrument bin 9 can be designed by using a heat-preservation Dewar flask, so that the high-temperature resistance of internal instruments and circuits at the bottom of a hole is improved.

The conventional outer diameter of the device in the embodiment is phi 42mm, the device meets the requirements of oil-gas drilling and geological drilling industries, and can meet the input measurement requirements in various conventional drill pipes (collars). According to special drill string design, can carry out the adaptation through structural design, have nimble application advantage.

The projection measurement type safe feeding device of the underground measuring instrument in the embodiment has multiple operation modes:

firstly, the device in this embodiment can adopt the instrument (probe) of the conventional input type measurement mode to transfer the task, the device is taken out after the drill is lifted to read the hole bottom data, the measurement requirements of key hole bottom parameters such as well deviation, temperature, pressure, rotating speed, vibration and the like can be met only by installing the corresponding measurement probe (sensor) and power supply and storage modules in the instrument bin 9, the measurement of the direction can be met by adopting the non-magnetic material manufacturing device body, and the time of putting into the well, the measurement time and the drill lifting and taking-out time can be flexibly determined according to the field conditions. The measurement of well deviation, direction, rotating speed, vibration and the like does not need to use a detection window, and the detection window plugging wire 10 and the O-shaped ring are used for sealing the instrument bin 9. The measurement of key parameters such as temperature, pressure and the like requires that the sensor directly contacts the external environment, the detection window plugging wire 10 can be detached, and the corresponding sensor is installed for measurement.

The second kind, the input type that can salvage is measured, because the device upper end in this embodiment is provided with salvage head 11, can match the steel cable fishing device who is applicable to the inside transfer of drilling rod at the scene, obtains parameter in the pit at any time through salvaging, is applicable to geological drilling rope coring drilling technology, also can be used to oil gas drilling, avoids lifting the drilling tool operation that obtains data, obtains data at any time, reduces the cost and increases effects, improves flexibility, high efficiency and the economic nature that data acquisition in the pit. The device in the embodiment has obvious advantages for obtaining the bottom hole parameters of the deep well, and the cost reduction and the efficiency increase are obvious when the well is deeper.

The third kind, hang and survey the operation, the fishing head 11 of the device upper end in this embodiment is equipped with the steel cable mounting hole, but lug connection hoist and mount steel cable, uses the winch to transfer the instrument, can not only satisfy the throwing in the drilling rod and survey the mode, still can be applied to the inside downthehole parameter measurement of body such as sleeve pipe, screen pipe, adopts storage formula measurement mode, and the part replaces logging operation to obtain downthehole parameter.

Therefore, the device in the embodiment adopts the two-stage buffering function of the buffer spring 19 and the hydraulic damping buffer and the two-stage speed reducing function of the turbine speed reducing joint and the telescopic righting support 4, so that the underground parameter acquisition instrument can be safely conveyed to the bottom of the well by a projection method. The telescopic righting support 4 can ensure that the device is positioned at the central position of the input pipe body, the measuring accuracy is improved, and the device can be applied to a drill column with the inner diameter changed. Can match fishing devices such as winch, steel cable to salvage through setting up fishing head 11, and then realize not carrying the brill and acquire the downhole measurement parameter, fishing head 11 is equipped with the steel cable mounting hole, but lug connection hoist and mount steel cable uses the winch to transfer the instrument, adopts storage formula measurement mode, can partly replace logging instrument operation. The device greatly improves the safety of the projection-measuring type operation instrument, has the characteristics of flexibility, high efficiency and reliability, has strong applicability, is suitable for oil-gas drilling and geological drilling, and has great advantages and application potential in deep well bottom parameter measurement.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (8)

1. A throwing measurement type safe feeding device of an underground measuring instrument is characterized by comprising a fishing head, a communication bin, an instrument bin upper joint, an instrument bin lower joint, a hydraulic damping cylinder, a damping cylinder upper joint, a bottom telescopic piston, a collision base, a buffer spring, a turbine section joint, a plurality of turbine speed reducing sections and a plurality of telescopic righting supports, wherein a steel cable mounting hole is formed in the fishing head, the fishing head is connected with the upper end of the communication bin through a plurality of telescopic righting supports, the lower end of the communication bin, the instrument bin upper joint, the instrument bin lower joint, a plurality of turbine speed reducing sections and the upper end of the turbine section joint are sequentially connected, the lower end of the turbine section joint is connected with the upper end of the damping cylinder upper joint through a plurality of telescopic righting supports, the hydraulic damping cylinder is mounted at the lower end of the damping cylinder upper joint, the hydraulic damping section of thick bamboo surface is provided with a plurality of through-holes, the upper end of bottom telescopic piston extends inside the hydraulic damping section of thick bamboo, the lower extreme of bottom telescopic piston is installed the collision base, the cover is equipped with on the bottom telescopic piston buffer spring, buffer spring is located under the hydraulic damping section of thick bamboo the terminal surface with between the collision base up end.

2. The device for feeding a downhole measuring instrument safely in a projection mode according to claim 1, wherein the telescopic centering bracket comprises a centering center shaft, a spring, two sliding rings and a plurality of telescopic assemblies, the spring and the two sliding rings are all sleeved on the centering center shaft, the spring is located above the upper sliding ring, the spring is in a pre-compression state, the telescopic assemblies comprise a pin shaft, a centering wheel, two upper support rods and two lower support rods, the upper ends of the two upper support rods are hinged to the upper sliding ring, the lower ends of the two lower support rods are hinged to the lower sliding ring, the pin shaft is connected with the lower ends of the two upper support rods and the upper ends of the two lower support rods, and the centering wheel is sleeved on the pin shaft.

3. The drop-gauge safety feeder of a downhole measuring instrument according to claim 2, wherein both ends of the central shaft of the telescopic centering bracket disposed between the fishing head and the communicating bin are respectively threadedly connected to a lower end of the fishing head and an upper end of the communicating bin, both ends of the central shaft of the telescopic centering bracket disposed between the turbine knuckle joint and the damping cylinder upper joint are respectively threadedly connected to a lower end of the turbine knuckle joint and an upper end of the damping cylinder upper joint, and a lower end of the damping cylinder upper joint is threadedly connected to the hydraulic damping cylinder.

4. The commissioning safety sending device of a downhole measuring instrument as recited in claim 2, further comprising an anti-collision rib, wherein the damping cylinder upper joint is provided with a step surface, the anti-collision rib is sleeved outside the damping cylinder upper joint, and the anti-collision rib is located between the slip ring at the middle lower part of the telescopic righting support and the step surface of the damping cylinder upper joint.

5. The throwing measurement type safety feeding device of the downhole measuring instrument according to claim 1, wherein the turbine speed reduction joint comprises a turbine central shaft, a turbine and two bearings, two ends of the turbine central shaft are fixedly connected with inner rings of the two bearings respectively, the turbine gap is sleeved on the turbine central shaft, and two ends of the turbine are fixedly connected with outer rings of the two bearings respectively.

6. The device for feeding the downhole measuring instrument safely, according to claim 5, wherein the turbine speed reducing joint is provided in plurality, the turbine central shaft of the turbine speed reducing joint at the top is in threaded connection with the lower tool bin joint through a stud, the turbine central shaft of the turbine speed reducing joint at the bottom is in threaded connection with the turbine joint, two adjacent turbine central shafts are in threaded connection, and a bearing backing ring is arranged between two adjacent bearings of the two turbine speed reducing joints.

7. The device for feeding the downhole measuring instrument safely in the throwing mode according to claim 1, wherein the communicating bin is in threaded connection with the upper instrument bin connector, the upper instrument bin connector is in threaded connection with the instrument bin, the lower instrument bin connector is in threaded connection with the instrument bin, and O-rings are arranged at the connection positions of two ends of the instrument bin, the upper instrument bin connector and the lower instrument bin connector.

8. The device for safely feeding the downhole measuring instrument in the commissioning mode according to claim 7, further comprising a detection window plugging wire, wherein the detection window plugging wire is provided with an O-shaped ring, a detection window is arranged in the middle of the upper joint of the instrument bin, the detection window plugging wire is used for sealing the detection window, and the communication bin is provided with a transverse hole.

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